3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function x($n) { for($i = 1; $i <= $n; $i++) { $n % $i == 0 && $i != $n ? $factors[]=$i:0; echo "$i "; } array_sum($factors) == $n ? printf(I) : printf(I); } x(28);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Notice: Use of undefined constant I - assumed 'I' in /in/RoLWH on line 7 I